1. The climate challenge: climate change, mitigation, and negative emissions 2. Negative emissions technology overview 3. Ethics, risks, and governance of NETs 4. The global carbon cycle 5. Terrestrial carbon cycle processes 6. Oceanic carbon cycle processes 7. CO2 absorption 8. CO2 adsorption 9. Membrane CO2 separation 10. CO2 mineralization 11. AR and other land- and soil-based methods 12. Biomass carbon capture and storage 13. Direct air capture 14. Non-CO2 GHG removal 15. Geological storage 16. Ocean storage and other ocean-based methods 17. Carbon dioxide utilization